Test connector
By designing a test connector containing limit blocks, guide rods and springs, the problem of poor contact caused by deflected contact during the test process of the RF switch test connector is solved, achieving higher contact quality and lower Miscalculation rate.
Patent Information
- Application Number
- CN202421272249.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-06-05
AI Technical Summary
During the test, the existing RF switch test connectors have a skewed contact between the conductor slope and the RF seat, resulting in an increase in contact resistance, resulting in poor contact.
A test connector is designed, including components such as inner conductor, outer conductor, central needle and conductive post. Through the coordination of the limit block, guide rod and spring, the conductive post is ensured to move outward and inward along the through hole axial direction. Achieve uniform contact of the radio frequency seat.
It effectively prevents the skewed contact between the test connector and the RF seat, reduces the error rate, and improves the contact quality of the test.
Smart Images
Figure CN222530861U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of test connectors, in particular to a test connector. Background Art
[0002] The grounding of the probes used to test the RF switch connector and the RF tester are all made of hard metal contact. The RF socket and the test probe are both off-center when installed on the test fixture. During the downward pressure of the test probe, the inclined surface of the conductor and the RF socket are in oblique contact. Long-term oblique single-point contact and scratched coating can easily lead to large contact resistance, resulting in poor contact during the test. Utility Model Content
[0003] In view of the above-mentioned problems in the prior art, the utility model provides a test connector, which solves the problem that in the prior art, the inclined surface of the conductor and the RF socket are in skewed contact during the downward pressing process of the test probe, and long-term skewed single-point contact and scratched coating can easily lead to large contact resistance, resulting in poor contact during the test.
[0004] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is as follows:
[0005] A test connector is provided, comprising an inner conductor, an outer conductor, and a center pin, wherein the inner conductor is sleeved on the center pin, a first insulating layer is arranged between the inner conductor and the center pin, the outer conductor is sleeved on the lower side of the inner conductor, a second insulating layer is arranged between the center pin and the inner conductor, a plurality of through holes are circumferentially arranged on the outer wall of the lower side of the outer conductor, and a conductive column is slidably connected in each of the through holes, one end of the conductive column is sleeved with a conductive silicone sleeve, the outer conductor is sleeved with a sleeve, the inner diameter of the sleeve decreases from top to bottom, the other end of the conductive column is slidably connected to the inner wall of the sleeve along the length direction, a limit seat is sleeved on the outer conductor, two guide rods are symmetrically arranged on the top of the sleeve, the guide rods both pass through the limit seat, a limit block is arranged at one end of the guide rod, and a spring located between the limit seat and the limit block is sleeved on the guide rod.
[0006] In some embodiments, a cross-shaped fixing flange is sleeved on the upper side of the inner conductor, a third insulator is disposed inside the fixing flange, and the center needle is insulatedly connected to the fixing flange through the third insulator.
[0007] In some embodiments, an adjusting cylinder is further included, a baffle is provided on the upper end of the adjusting cylinder, a through groove is provided on the baffle, the limiting seat is a cylindrical structure, and the adjusting cylinder is threadedly connected to the limiting seat.
[0008] In some embodiments, a threaded hole is provided on the limit block, an external thread is provided at one end of the guide rod, and the guide rod is threadedly connected to the corresponding threaded hole through the external thread.
[0009] In some embodiments, the number of the through holes is four, and the four through holes are evenly distributed along the circumference of the outer conductor.
[0010] In some embodiments, the inner wall of the sleeve is provided with a plurality of slide grooves passing through both ends of the sleeve along the length direction, a slider is provided at one end of the conductive column, and one end of the conductive column extends into the slide groove through the slider to be slidably connected with the inner wall of the sleeve.
[0011] The beneficial effects of the utility model are:
[0012] When the test connector is pressed down and contacts the RF socket, the limit block is moved downward by applying force, the limit block compresses the spring, and the guide rod moves downward to drive the conductive column to move outward along the axial direction of the through hole. The circular upper rubber core on the upper side of the RF socket and part of the grounding shell of the outer ring are pressed into the outer conductor. At this time, the limit block is released, and the spring drives the limit block to move upward and reset. The limit block drives the guide rod to move upward and drive the conductive column to move inward along the axial direction of the through hole. Multiple conductive columns drive the conductive silicone sleeve to contact and squeeze the grounding shell of the RF socket, which can prevent the test connector from having skewed contact with the RF socket and can effectively reduce the false detection rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a cross-sectional view of the utility model;
[0014] Figure 2 It is a partial schematic diagram of the new A of the present invention;
[0015] Among them, 1. inner conductor; 2. outer conductor; 3. center needle; 4. first insulating layer; 5. second insulating layer; 6. through hole; 7. conductive column; 8. conductive silicone sleeve; 9. sleeve; 10. limit seat; 11. guide rod; 12. limit block; 13. spring; 14. fixing flange; 15. third insulator; 16. adjusting cylinder; 17. baffle; 18. slide groove; 19. slider. DETAILED DESCRIPTION
[0016] The specific implementation methods of the utility model are described below to facilitate technical personnel in this technical field to understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific implementation methods. For ordinary technical personnel in this technical field, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, and all utility model creations using the concept of the utility model are protected.
[0017] Embodiment 1
[0018] The present application embodiment provides a test connector, such as Figure 1 As shown, it includes an inner conductor 1, an outer conductor 2, and a center needle 3. The inner conductor 1 is sleeved on the center needle 3, and a first insulating layer 4 is arranged between the inner conductor 1 and the center needle 3. The outer conductor 2 is sleeved on the lower side of the inner conductor 1, and a second insulating layer 5 is arranged between the center needle 3 and the inner conductor 1. The outer wall of the lower side of the outer conductor 2 is circumferentially provided with a plurality of through holes 6, and a conductive column 7 is slidably connected in each of the through holes 6. A conductive silicone sleeve 8 is sleeved at one end of the conductive column 7. A sleeve 9 is sleeved on the outer conductor 2, and the inner diameter of the sleeve 9 decreases from top to bottom. The other end of the conductive column 7 is slidably connected to the inner wall of the sleeve 9 along the length direction. A limit seat 10 is sleeved on the outer conductor 2, and two guide rods 11 are symmetrically arranged on the top of the sleeve 9. The guide rods 11 all penetrate the limit seat 10, and a limit block 12 is arranged at one end of the guide rod 11. A spring 13 located between the limit seat 10 and the limit block 12 is sleeved on the guide rod 11.
[0019] In the embodiment of the present application, the outer conductor 2 and the inner conductor 1 are coaxially arranged cylindrical structures, the center pin 3 is connected to the inner conductor 1 through the first insulating layer 4, and the outer conductor 2 is connected to the center pin 3 through the second insulating layer 5. The first insulating layer 4 and the second insulating layer 5 can prevent the center pin 3 from shaking during the test. When the test connector is pressed down and in contact with the RF socket, the limit block 12 is moved downward by applying force, the limit block 12 compresses the spring 13, and the guide rod 11 moves downward to drive the conductive column 7 to move outward along the axial direction of the through hole 6. The circular upper rubber core on the upper side of the RF socket and the part of the grounding shell of the outer ring are pressed into the outer conductor 2. At this time, the limit block 12 is released, and the spring 13 drives the limit block 12 to move upward and reset. The limit block 12 drives the guide rod 11 to move upward and drive the conductive column 7 to move inward along the axial direction of the through hole 6. Multiple conductive columns 7 drive the conductive silicone sleeve 8 to contact and squeeze with the grounding shell of the RF socket, which can prevent the test connector from having skewed contact with the RF socket and can effectively reduce the misdetection rate.
[0020] Embodiment 2
[0021] On the basis of the first embodiment, Figure 1 As shown, a cross-shaped fixing flange 14 is sleeved on the upper side of the inner conductor 1 , a third insulator 15 is arranged inside the fixing flange 14 , and the center needle 3 is insulatedly connected to the fixing flange 14 through the third insulator 15 .
[0022] In the embodiment of the present application, a third insulator 15 is provided inside the fixed flange 14, and the center needle 3 is insulated and connected to the fixed flange 14 through the third insulator 15, so as to improve the stability of the fixed flange 14. Specifically, a plurality of mounting holes are provided on the fixed flange 14, so as to facilitate fixing the inner conductor 1 on a test fixture (not shown in the figure) through the fixed flange 14.
[0023] Embodiment 3
[0024] On the basis of the first embodiment, Figure 1 As shown, it also includes an adjusting cylinder 16 , a baffle 17 is provided at the upper end of the adjusting cylinder 16 , a through groove is provided on the baffle 17 , the limiting seat 10 is a cylindrical structure, and the adjusting cylinder 16 is threadedly connected to the limiting seat 10 .
[0025] In the embodiment of the present application, a baffle 17 is provided at the upper end of the adjusting cylinder 16, and a through groove is provided on the baffle 17. The baffle 17 is sleeved on the outer conductor 2 through the through groove. The inner wall of the adjusting cylinder 16 is provided with an internal thread, and the outer wall of the limit seat is provided with an external thread. The adjusting cylinder 16 is threadedly connected with the limit seat 10 through the internal thread and the external thread. The distance between the baffle 17 and the limit seat 10 can be adjusted by forward and reverse rotation. The position of the limit block 12 can be limited by adjusting the position of the baffle 17, so that the height position of the guide rod 11 can be adjusted by limiting the position of the limit block 12, thereby realizing the adjustment of the height position of the limit sleeve 9.
[0026] Embodiment 4
[0027] On the basis of the first embodiment, a threaded hole is provided on the limit block 12, an external thread is provided on one end of the guide rod 11, and the guide rod 11 is threadedly connected with the corresponding threaded hole through the external thread.
[0028] Among them, Figure 2 As shown, the inner wall of the sleeve 9 is provided with a plurality of slide grooves 18 penetrating both ends of the sleeve 9 along the length direction, and a slider 19 is provided at one end of the conductive column 7. One end of the conductive column 7 extends into the slide groove 18 through the slider 19 and is slidably connected with the inner wall of the sleeve 9.
[0029] In the embodiment of the present application, the guide rod 11 and the limit block 12 are threadedly connected by external threads and threaded holes, the slide groove 18 is a concave groove, the slider 19 is a convex block, and the conductive column 7 extends from one end of the slide groove 18 into the inner wall of the slide groove 18 and the sleeve 9 through the slider 19, and is slidably connected along the length direction of the sleeve 9. This makes it convenient to remove the limit block 12 from the guide rod 11 when the conductive silicone sleeve 8 is damaged, and then remove the guide rod 11 from the limit seat 10, and the sleeve 9 moves downward. The conductive column 7 slides along the slide groove 18 through the slider 19, and the sleeve 9 moves downward to a certain position. The conductive column 7 is separated from the sleeve 9, and the conductive column 7 is taken out from the through hole 6, and the conductive silicone sleeve 8 can be replaced.
[0030] Embodiment 5
[0031] On the basis of the first embodiment, the number of the through holes 6 is four, and the four through holes 6 are evenly distributed along the circumference of the outer conductor 2 .
[0032] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the equivalent technology of the claims of the present invention, the present invention is also intended to include these modifications and variations.
Claims
1. A test connector, characterized in that: It includes an inner conductor, an outer conductor, and a center needle, the inner conductor is sleeved on the center needle, a first insulating layer is arranged between the inner conductor and the center needle, the outer conductor is sleeved on the lower side of the inner conductor, a second insulating layer is arranged between the center needle and the inner conductor, a plurality of through holes are circumferentially arranged on the outer wall of the lower side of the outer conductor, and a conductive column is slidably connected in each of the through holes, one end of the conductive column is sleeved with a conductive silicone sleeve, the outer conductor is sleeved with a sleeve, the inner diameter of the sleeve decreases from top to bottom, the other end of the conductive column is slidably connected to the inner wall of the sleeve along the length direction, a limit seat is sleeved on the outer conductor, two guide rods are symmetrically arranged on the top of the sleeve, the guide rods all pass through the limit seat, a limit block is arranged at one end of the guide rod, and a spring located between the limit seat and the limit block is sleeved on the guide rod.
2. A test connector according to claim 1, characterized in that: A cross-shaped fixing flange is sleeved on the upper side of the inner conductor, a third insulator is arranged inside the fixing flange, and the center needle is insulatedly connected to the fixing flange through the third insulator.
3. A test connector according to claim 1, characterized in that: It also includes an adjusting cylinder, a baffle is provided on the upper end of the adjusting cylinder, a through groove is provided on the baffle, the limiting seat is a cylindrical structure, and the adjusting cylinder is threadedly connected to the limiting seat.
4. A test connector according to claim 1, characterized in that: The limit block is provided with a threaded hole, one end of the guide rod is provided with an external thread, and the guide rod is threadedly connected with the corresponding threaded hole through the external thread.
5. A test connector according to claim 1, characterized in that: The number of the through holes is four, and the four through holes are evenly distributed along the circumference of the outer conductor.
6. A test connector according to claim 1, characterized in that: The inner wall of the sleeve is provided with a plurality of sliding grooves penetrating both ends of the sleeve along the length direction, one end of the conductive column is provided with a sliding block, and one end of the conductive column extends into the sliding groove through the sliding block to be slidably connected with the inner wall of the sleeve.